关于远程升级，适合与所有ARM系列，iap远程升级

电力系统多功能电表 CRC校验代码源程序大全，支持以下规约或电表 ALPHA规约,IEC1107规约，DLT645规约，EDMI规约，ION-ModBUS RTU规约，ModBus规约,Quad4规约-Multi-function meter power system source code CRC checksum Guinness, to support the following Statute or the Statute ALPHA meter, IEC1107 statute, DLT645 statute, EDMI statute, ION-ModBUS RTU statute, ModBus statute, Quad4 Statute

通过这个程序，你可以知道电话是怎样拨号，是怎样接通，怎样传输。-through this procedure, you know how to dial telephone is connected to what, how transmission.

按键扫描 51单片机加8279 8279通过74LS 138译码器扩展4×4键盘、6位显示器。 由3-8译码器对SL0～SL2译出键扫描线，由另一3-8译码器译出显示器的位扫描线，并采用了编码扫描方式。 为了防止出现重键现象，扫描输出线高位SL3不参加键扫描译码。CPU对8279的监视采用了查询方式，故8279的中断请求信号IRQ悬空未用。 -Scan button 82,798,279 plus 51 single-chip decoder 74LS 138 through the expansion of 4 × 4 keyboard, the display 6. From 3-8 decoder SL0 ~ SL2 translated to the key scanning line, by another 3-8 decoder translated display scan line, and uses code scanning. In order to prevent the emergence of the phenomenon of re-key, scan the output line does not take part in high level SL3 scan decoding keys. CPU on the 8279 surveillance using the query mode, the 8279 interrupt request signal IRQ left unused.

主要是实现I2C协议的一种方法，主要运行环境是ADS1.2-I2C protocol is mainly to achieve a method, the main operating environment is ADS1.2

单片机的串口调试程序，可实现简单的串口通信-Single-chip serial debugging procedures can realize a simple serial communication

用单片机实现E1等芯片的初始化，给出了E1芯片DS21Q53的初始化方法-E1 MCU chip initialization, given the DS21Q53 E1 chip initialization method

瑞萨7709系列高档单片机串口通信的工程文件，实现简单的单片机与PC之间的串口通信-Renesas 7709 series high-end single-chip serial communication engineering documents, to achieve a simple and single-chip serial communication between PC

AVR单片机的GCC语言编译器，和VC一样的界面-AVR the GCC compiler, and the same interface VC

51单片机C语言应用程序设计实例精讲的源码程序，里面有protel格式的电路图和程序代码，希望对大家有帮助-51 Single-chip C language application design example精讲the source program, which has Protel format circuit diagram and program code, and they hope to have everyone help

用12864液晶显示电子时钟,并能进行温度显示,可更改时间-12864 liquid crystal display with electronic clock and temperature display, time can change